From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D41BAC43603 for ; Mon, 9 Dec 2019 17:57:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B009020663 for ; Mon, 9 Dec 2019 17:57:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726365AbfLIR5T (ORCPT ); Mon, 9 Dec 2019 12:57:19 -0500 Received: from mail-yb1-f193.google.com ([209.85.219.193]:32976 "EHLO mail-yb1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726230AbfLIR5S (ORCPT ); Mon, 9 Dec 2019 12:57:18 -0500 Received: by mail-yb1-f193.google.com with SMTP id o63so6480785ybc.0; Mon, 09 Dec 2019 09:57:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qei/AYQXNst4gEgpnVYA7NFVSVcsDop3iCvV2R7BSTI=; b=P1IBwsVG1cGn0KRwtBdlP3FE3DN2EeipMvaoqqKHAet50Iw67U1scaq6LSIRaWKvP+ ygNvJNgjxAt/ShEVFQR8sw6h2ndKba+pN0ImbQAIJ6c7oGl8zcC3HUbr+MGczk20QGSc Te8aYt+Q8vnExT6yJn3VqclBTk0jwOcFANGgX6zs3y3O/WuXOe6ecy3E73uv0m6jw9yZ eYY7HOS5UF7+ZtTfMUo2uWSiYouXuX3bT8jJ5w7EWkcMyRauTr3ZNVwmlAtl58VY56Un MxfxyrQU1CCaGofz24MkVyO73u04Sk/hjpWM5/2U6KW+ZgW7DPP45m6jZwbeqgL1zvzx fhgQ== X-Gm-Message-State: APjAAAX/NN+9+p1X7c8PSZnpyyanv50BZNL5PJnc3KeOeozWIrK2gstV NpGjCwJpMmf8poC2h2/+MUW36fHMJVgsJnz3HOE= X-Google-Smtp-Source: APXvYqz4DjmgUMCLAs/3U0LVrQER9vKVWUuTTZiInvynh57cPM6y1wIzI/89XHRRaXx6krX4w4Mo8IH1dWtwVlg6oGE= X-Received: by 2002:a25:5f4d:: with SMTP id h13mr21799718ybm.390.1575914237631; Mon, 09 Dec 2019 09:57:17 -0800 (PST) MIME-Version: 1.0 References: <157558502272.10278.8718685637610645781.stgit@warthog.procyon.org.uk> <20191206135604.GB2734@twin.jikos.cz> In-Reply-To: From: Akemi Yagi Date: Mon, 9 Dec 2019 09:57:06 -0800 Message-ID: Subject: Re: [PATCH 0/2] pipe: Fixes [ver #2] To: Linus Torvalds Cc: Vincent Guittot , DJ Delorie , David Sterba , David Howells , Eric Biggers , Al Viro , linux-fsdevel , Linux Kernel Mailing List , Peter Zijlstra , Ingo Molnar Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Mon, Dec 9, 2019 at 9:49 AM Linus Torvalds wrote: > > [ Added DJ to the participants, since he seems to be the Fedora make > maintainer - DJ, any chance that this absolutely horrid 'make' buf can > be fixed in older versions too, not just rawhide? The bugfix is two > and a half years old by now, and the bug looks real and very serious ] (snip) > But sadly, there's no way I can push that fair pipe wakeup thing as > long as this horribly buggy version of make is widespread. > > Linus In addition to the Fedora make-4.2.1-4.fc27 (1) mentioned by Linus, RHEL 8 make-4.2.1-9.el8 (2) is affected. The patch applied to Fedora make (3) has been confirmed to fix the issue in RHEL's make. Those are the only real-world examples I know of. I have no idea how widespread this thing is... Akemi (1) https://bugzilla.redhat.com/show_bug.cgi?id=1556839 (2) https://bugzilla.redhat.com/show_bug.cgi?id=1774790 (3) https://git.savannah.gnu.org/cgit/make.git/commit/?id=b552b05251980f693c729e251f93f5225b400714